127920945 has 8 divisors (see below), whose sum is σ = 204673536. Its totient is φ = 68224496.

The previous prime is 127920941. The next prime is 127920967. The reversal of 127920945 is 549029721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 127920945 - 2² = 127920941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (127920941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4264017 + ... + 4264046.

It is an arithmetic number, because the mean of its divisors is an integer number (25584192).

Almost surely, 2^127920945 is an apocalyptic number.

127920945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127920945 is a deficient number, since it is larger than the sum of its proper divisors (76752591).

127920945 is an equidigital number, since it uses as much as digits as its factorization.

127920945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8528071.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 127920945 is about 11310.2141889533. The cubic root of 127920945 is about 503.8646454047.

The spelling of 127920945 in words is "one hundred twenty-seven million, nine hundred twenty thousand, nine hundred forty-five".